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WO2009008562A1 - Additif inorganique optiquement actif et film de transformation de lumière comprenant l'additif - Google Patents

Additif inorganique optiquement actif et film de transformation de lumière comprenant l'additif Download PDF

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Publication number
WO2009008562A1
WO2009008562A1 PCT/KR2007/003366 KR2007003366W WO2009008562A1 WO 2009008562 A1 WO2009008562 A1 WO 2009008562A1 KR 2007003366 W KR2007003366 W KR 2007003366W WO 2009008562 A1 WO2009008562 A1 WO 2009008562A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
equal
light
additive
photoconversion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2007/003366
Other languages
English (en)
Inventor
Jae Suk Sung
Naum Soshchin
Ko Yeon Choo
Tae Hwan Kim
Sang Hyun Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ENVIO Co Ltd
Original Assignee
ENVIO Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ENVIO Co Ltd filed Critical ENVIO Co Ltd
Priority to PCT/KR2007/003366 priority Critical patent/WO2009008562A1/fr
Priority to JP2010515958A priority patent/JP2010533223A/ja
Publication of WO2009008562A1 publication Critical patent/WO2009008562A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
    • C09K11/7784—Chalcogenides
    • C09K11/7787—Oxides
    • C09K11/7789—Oxysulfides
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00—Protection of plants
    • A01G13/30—Ground coverings
    • A01G13/32—Mats; Nets; Sheets or films
    • A01G13/33—Sheets or films
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/7734—Aluminates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/77742—Silicates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • H10K30/80—Constructional details
    • H10K30/87—Light-trapping means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Definitions

  • the present invention relates to a photoactive inorganic additive and a photo- conversion film containing the same and, more particularly, to a photoactive inorganic additive for converting the ultraviolet spectral region of light to a spectral region useful to plant growth and a photoconversion film containing the same.
  • Greenhouses are widely distributed over the northern and southern hemispheres of the earth, the climate of which shows a broad diurnal range during the growth period of crops.
  • a greenhouse is built by using a sheet or roll made of an inorganic material (e.g., silicate glass) or an organic material (e.g., organic glass and polymer) exhibiting increased transmittance to the light falling within a spectral region of visible ray.
  • an inorganic material e.g., silicate glass
  • organic material e.g., organic glass and polymer
  • a new technical field "plant illumination” that governs the light intensity, the light irradiation time and the spectral properties in a greenhouse has been created based on the theory suggested by K. A. Timiryazev et al.
  • a special glow- lamp and light-emitting-lamp system is installed within a greenhouse and used in accelerating the growth of plants. Thanks to the achievement of research in this field, it became possible to harvest various plants, such as garden plants, vegetables, strawberries, flowering plants and cabbages, in a large quantity over autumn, winter and spring.
  • the plant cultivation cost has also been increased to a great extent.
  • a polymer film for greenhouses has been used in an effort to accelerate the growth of plants over autumn, winter and spring. The polymer film is required to exhibit the following properties.
  • the polymer film needs to have the mechanical strength great enough to withstand a strong wind pressure without being tore up, the light transmittance high enough to transmit the light falling within the whole visible light spectrum region, the absorbability and re-emitting property of infrared rays of 10 to 25
  • Russian Patent No. RU2131661 discloses a photoconversion cover for greenhouses formed of a polymer film and an organic glass. However, this photoconversion cover has no great effect on the photosynthesis factors of plants cultivated within a greenhouse.
  • U.S. S. R. Patent No. SU1780309 discloses a photoconversion film for greenhouses that contains the complex of 1,10-phenantrolyne, 2,2'-dipyridine, 4,4'-dimethyl-2,2'-dipyridine or paraffin europium nitrate.
  • [8] Russian Patent No. RU2127511 discloses a photoconversion film for greenhouses composed of a thermoplastic polymer, a light stabilizer and europium compound-based inorganic phosphor. Phenozan-23 is used as the light stabilizer.
  • the inorganic phosphor use is made of: 1) europium-activated strontium sulfide; 2) calcium sulfide activated by europium, dysprosium and/or terbium; and 3) strontium calcium sulfide activated by europium, dysprosium and/or terbium.
  • the photoconversion film absorbs ultraviolet rays in the light spectrum region of 290 to 330nm or 400 to 440nm and emits red spectrum rays of 580 to 760nm having a peak intensity at 618 to 680nm.
  • the photoconversion film also exhibits a fluorescence property lasting for two hours at most.
  • the photoconversion film composed of a light- transmitting thermoplastic polymer and a photoactive additive.
  • the photoconversion film has a general expression of [(La Eu )O] (Lig) , where Lig denotes F , Cl , or Br l-x x m n 2 2 3 in case of m and n being equal to 1 but Lig stands for S , SiO or PO in case of m and n being equal to 2 and 1, respectively.
  • the photoconversion film includes 0.02 to 5wt% of photoactive additive, the remainder being a light-transmitting thermoplastic polymer.
  • the photoconversion film is problematic in the following aspects.
  • the constituent materials of the film emit secondary light only in the orange-red spectrum region and do not emit secondary light in the blue spectrum region. This may adversely affect fabaceous plants and other agricultural plants.
  • the intensity of secondary light emitted becomes high only when the content of the additive in an inorganic oxysulfide-based polymer composition is as high as 0.2 to 0.5 wt%.
  • the photocon version film shows reduced light-emitting intensity in the red spectrum region and therefore has little influence on the growth of plants. This is due to the lack of film production technology, the failure to optimally control the concentration of the additive, i.e., europium yttrium oxysulfide, and the failure to optimize the emission amount of orange-red spectrum light. Another cause is the reduced efficiency of an optical factor in the photosynthesis.
  • the emission spectrum of europium yttrium oxysulfide is composed of different wavelength peaks of 585nm, 616nm and 626nm. The interval between the wavelength peaks equivalent to about 40nm does not assist in increasing the photosynthesis efficiency. Disclosure of Invention Technical Problem
  • a photoactive inorganic additive for photoconversion films comprising at least one member selected from the group consisting of the following compounds:
  • z is equal to 0 to 0.0002
  • Y is yttrium
  • TR is europium
  • TR is praseodymium or samarium
  • TR is praseodymium or terbium
  • [16] 2 Y (TR ) (TR ) SiO , where x is equal to 0.01 to 0.1 , y is equal to 0 to 0.005, Y
  • 2-x-y I x H y 5 is yttrium, TR is cerium and TR is neodymium or thulium.
  • a photoconversion film comprising at least one photoactive inorganic additive selected from the group consisting of the following compounds: [18] 1) Y (TR ) (TR ) O S, where p is equal to 0.01 to 0.1, q is equal to 0 to
  • z is equal to 0 to 0.0002
  • Y is yttrium
  • TR is europium
  • TR is praseodymium or samarium
  • TR is praseodymium or terbium
  • 2-x-y I x H y 5 is yttrium, TR is cerium and TR is neodymium or thulium.
  • the photoconversion film further comprises a light stabilizer.
  • the present invention provides a photoactive inorganic additive for use in improving the photocon version property of a photoconversion film. Furthermore, the present invention provides a photoconversion film containing the photoactive inorganic additive.
  • the photoactive inorganic additive in accordance with the present invention includes at least one member selected from the group consisting of the following compounds: [23] 1) Y (TR ) (TR ) (TR ) O S, where p is equal to 0.01 to 0.1, q is equal to 0 to
  • z is equal to 0 to 0.0002
  • Y is yttrium
  • TR is europium
  • TR is praseodymium or samarium
  • TR is praseodymium or terbium
  • 2-x-y I x H y 5 is yttrium, TR is cerium and TR is neodymium or thulium.
  • the inorganic additive represented by the compound 1) is superior in its property of absorbing the ultraviolet region light and converting the same to the red region light useful to the growth of general plants. It is preferred that the compound 1) is added to the photoconversion film in an amount of 0.0001 to 0.02wt% based on the weight of the photoconversion film.
  • the inorganic additive represented by the compound 2) is superior in its property of absorbing the ultraviolet region light and converting the same to the blue region light useful to the growth of fabaceous plants and other agricultural plants. It is preferred that the compound 2) is added to the photoconversion film in an amount of 0.0001 to 0.005 wt% based on the weight of the photoconversion film.
  • the compounds 1) and 2) may be added, either independently or in combination, to a polymer material of which the photoconversion film is made. It is preferred that the compounds 1) and 2) are all added to the polymer material. In this case, the ratio of the compounds 1) and 2) is preferably in the range of from 1:1 to 3: 1.
  • a light stabilizer may be added in order to increase the light stability of the photoconversion film.
  • One representative example of the light stabilizer is tertiary amino succinate.
  • the ratio of the light stabilizer and the inorganic additive is preferably 1:1 to 1:3 and more preferably 1: 1.2 to 1:1.5.
  • thermoplastic polymer is used in producing the present photoconversion film.
  • the thermoplastic polymer is not particularly limited but may include, e.g., polyethylene, polyvinylchloride, ethylene vinyl acetate and polycarbonate glass.
  • the present photoconversion film was subjected to a ultraviolet light transmission test, as a result of which it was confirmed that the film does not transmit the ultraviolet light. It was also confirmed that, in case of adding the compounds 1) and T) as the inorganic additive, the film emits blue-orange-red light regardless of whether the light irradiated is artificial ultraviolet light or natural ultraviolet light.
  • the intensity of photon energy in the blue, orange and red spectrum regions depends on the content of the inorganic additive, i.e., the compounds 1) and 2) and the weight ratio of the inorganic additive to the film. However, the light radiation intensity is not changed linearly depending on the quantity of additive. Likewise, the light radiation intensity in the blue, orange and red spectrum regions is changed in a non-linear fashion.
  • the photoconversion does not occur in proportion to the quantity of additive, which means that the photoconversion amount is increased non-linearly. That is to say, even when the content of the compound 2) as the inorganic additive is increased to a level 50% greater than the afore-mentioned amount (i.e., 0.0001 to 0.005 wt% based on the weight of the photoconversion film), the blue light with a wavelength of 425nm shows only a 20% increase in its intensity.
  • 0.5kg of blue phosphor and 2.0kg of red phosphor were used to produce a film having a weight of 1000kg.
  • the blue phosphor and the red phosphor were put into a rotary mixer together with 0.5kg of IRGANOX 1010 (a product of Ciba-Geigy AG, Switzerland) as a thermal stabilizer and an anti-oxidizer and 3kg of TINUVIN 622 (a product of Ciba-Geigy AG, Switzerland) as a hindered amine light stabilizer.
  • the rotary mixer used at this time was preliminarily filled with 20kg of low-density polyethylene and pre-heated to a temperature of 100 0 C. Thereafter, the ingredients in the rotary mixer were mixed for one hour. The mixture thus obtained was transferred to a horizontal extruder in which the temperature of an output plate is maintained at 15O 0 C.
  • the plurality of granules is called a master batch and has a luminance to the ultraviolet light greater than that of a standard specimen. Assuming that the luminance L of the standard specimen is 100%, the luminance of the master batch is as high as 120%. This means that the ultraviolet light is removed and the radiation intensity in the blue-orange-red spectrum region is increased.
  • a two-layer film with inner and outer layers was produced using a twin head extruder. 35% of the total master batch was used in forming the inner layer of the film, while 65% of the total master batch was used in forming the outer layer. Low-density polyethylene was used a predominant material of the film. The film thus produced is 120
  • Example 2 in thickness and 10m in width.
  • the light transmittance of the film is about 91% and the tensile strength thereof is approximately 130kgf/cm .
  • Example 1 95 005 5 09 0 1 10 17 standard blue phosphor were used in combination.
  • 1.5kg of Y Eu O S was used as red phosphor.
  • lkg of IRGANOX 1010 (a product of Ciba-Geigy AG, Switzerland) as a thermal stabilizer and an anti-oxidizer and 3kg of TINUVIN 622 (a product of Ciba-Geigy AG, Switzerland) as a hindered amine light stabilizer.
  • 20kg of the 4:1 mixture of low-density polyethylene and ethylene vinyl acetate was used in place of the low-density polyethylene employed in Example 1.
  • the mixing operation for the production of a master batch is carried out in the same manner as in Example 1 , except that the output plate of the horizontal extruder is maintained at a temperature of 16O 0 C.
  • the mixture was extruded into an elongated rod, which was cooled with cooling water and cut into a plurality of granules each having a diameter of 4 to 8mm.
  • fluorinated low-density polyethylene was added as an anti-dewdrop agent.
  • the three-layer film thus produced is as high in tensile strength as about 200kgf/cm , which is sufficient to endure the snow slip and the strong wind in winter.
  • Plant cultivation tests were performed in the same method as used in a conventional greenhouse test for measuring the reduction rate of carbon dioxide generated by carbon dioxide assimilation of plants within a greenhouse.
  • the test results revealed that, as compared to a greenhouse built with a pure polyethylene film, the greenhouse constructed from the present film increases the growth rate of plants (one week in case of tomatoes and hot peppers, although there is a difference depending on the kinds of plants) and shortens the time within which plants come into full maturity (one week in case of tomatoes).
  • the present photocon version film containing a photoactive inorganic additive has a short wavelength light absorbance equivalent to that of an inorganic glass sheet.
  • the photon yield rate of the present film at the time of re- emission is as high as 0.75 to 0.9.
  • the brightness of an emission spectrum exceeds the brightness of a light spectrum having the same wavelength, thereby exhibiting the Timiryazev spectrum effect.
  • the present photoconversion film serves to scatter or reflect infrared light of long wavelength, which helps increase the temperature of soil within a greenhouse.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Soil Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Protection Of Plants (AREA)
  • Cultivation Of Plants (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Greenhouses (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

L'invention porte sur un film de photoconversion qui comprend au moins un additif inorganique photoactif choisi dans le groupe constitué par les composés suivants : 1) Y 2-p-q-z (TR III) p(TRIV )q (TRv)zO2 S, où p est égal à 0,01 à 0,1, q est égal à 0 à 0,001, z est égal à 0 à 0,0002, Y représente l'yttrium, TRIII représente l'europium, TRIII représente le praséodyme ou le samarium, et TR représente le praséodyme ou le terbium ; et 2) Y 2-x-y(TRI)x(TRII y SiO5, où x est égal à 0,01 à 0,1, y est égal à 0 à 0,005, Y représente l'yttrium, TRI qui représente le cérium et TRII représente le néodyme or le thulium. Avec ce film, il est possible de convertir la région spectrale ultraviolette en une région spectrale utile pour la croissance des plantes.
PCT/KR2007/003366 2007-07-11 2007-07-11 Additif inorganique optiquement actif et film de transformation de lumière comprenant l'additif Ceased WO2009008562A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/KR2007/003366 WO2009008562A1 (fr) 2007-07-11 2007-07-11 Additif inorganique optiquement actif et film de transformation de lumière comprenant l'additif
JP2010515958A JP2010533223A (ja) 2007-07-11 2007-07-11 光活性無機添加剤およびこれを含む光転換フィルム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2007/003366 WO2009008562A1 (fr) 2007-07-11 2007-07-11 Additif inorganique optiquement actif et film de transformation de lumière comprenant l'additif

Publications (1)

Publication Number Publication Date
WO2009008562A1 true WO2009008562A1 (fr) 2009-01-15

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WO (1) WO2009008562A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020148353A1 (fr) * 2019-01-18 2020-07-23 Merck Patent Gmbh Procédé de modulation d'un état d'une cellule biologique
WO2021111000A1 (fr) * 2019-12-06 2021-06-10 Solvay Sa Utilisation d'oxysulfures de terre rare dans un film à effet de serre pour la croissance de plantes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170039178A (ko) * 2014-08-04 2017-04-10 로디아 오퍼레이션스 개질된 인광체 및 이의 조성

Citations (5)

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WO1993009664A1 (fr) * 1991-11-12 1993-05-27 Nippon Soda Co., Ltd. Materiau de conversion de la longueur d'onde de la lumiere, a usage dans l'agriculture
US6589450B1 (en) * 1997-11-25 2003-07-08 Ljubov Robertovna Bratkova Light-converting material and composition for producing the same
KR20050100578A (ko) * 2005-09-28 2005-10-19 한국에너지기술연구원 긴 잔광을 얻을 수 있는 광전환 필름
KR20060066959A (ko) * 2004-12-14 2006-06-19 한국화학연구원 광활성 이온이 함유된 무/유기 나노 복합체 및 이의제조방법
KR20070075014A (ko) * 2006-01-11 2007-07-18 한국에너지기술연구원 광 변환 그린하우스 필름용 광 활성 무기첨가제 및 이를함유하는 그린하우스 필름

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JPS54127945A (en) * 1978-03-29 1979-10-04 Mitsubishi Electric Corp Photoconversion sheet
JPH048793A (ja) * 1990-04-26 1992-01-13 Mitsubishi Electric Corp 螢光体粉末の製造方法
DE4142389A1 (de) * 1990-12-22 1992-06-25 Samsung Electronic Devices Roter leuchtstoff und verfahren zu seiner herstellung
KR0171639B1 (ko) * 1994-11-22 1999-03-30 박원배 내후성이 우수한 농업용 형광필름

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009664A1 (fr) * 1991-11-12 1993-05-27 Nippon Soda Co., Ltd. Materiau de conversion de la longueur d'onde de la lumiere, a usage dans l'agriculture
US6589450B1 (en) * 1997-11-25 2003-07-08 Ljubov Robertovna Bratkova Light-converting material and composition for producing the same
KR20060066959A (ko) * 2004-12-14 2006-06-19 한국화학연구원 광활성 이온이 함유된 무/유기 나노 복합체 및 이의제조방법
KR20050100578A (ko) * 2005-09-28 2005-10-19 한국에너지기술연구원 긴 잔광을 얻을 수 있는 광전환 필름
KR20070075014A (ko) * 2006-01-11 2007-07-18 한국에너지기술연구원 광 변환 그린하우스 필름용 광 활성 무기첨가제 및 이를함유하는 그린하우스 필름

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020148353A1 (fr) * 2019-01-18 2020-07-23 Merck Patent Gmbh Procédé de modulation d'un état d'une cellule biologique
CN113302259A (zh) * 2019-01-18 2021-08-24 默克专利股份有限公司 调节生物细胞状态的方法
WO2021111000A1 (fr) * 2019-12-06 2021-06-10 Solvay Sa Utilisation d'oxysulfures de terre rare dans un film à effet de serre pour la croissance de plantes

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